From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <stephen@networkplumber.org>
Subject: Re: About the data payload of rte_mbuf?
Date: Wed, 5 Dec 2018 23:09:14 -0800
Message-ID: <20181205230914.2ea215f2@xeon-e3>
References: <tencent_1D234E7425109D404F86B6466A1790162107@qq.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Cc: "dev" <dev@dpdk.org>
To: "bai bakari" <912873551@qq.com>
Return-path: <dev-bounces@dpdk.org>
Received: from mail-pg1-f171.google.com (mail-pg1-f171.google.com
 [209.85.215.171]) by dpdk.org (Postfix) with ESMTP id 84E887D4A
 for <dev@dpdk.org>; Thu,  6 Dec 2018 08:09:17 +0100 (CET)
Received: by mail-pg1-f171.google.com with SMTP id t13so10205739pgr.11
 for <dev@dpdk.org>; Wed, 05 Dec 2018 23:09:17 -0800 (PST)
In-Reply-To: <tencent_1D234E7425109D404F86B6466A1790162107@qq.com>
List-Id: DPDK patches and discussions <dev.dpdk.org>
List-Unsubscribe: <https://mails.dpdk.org/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://mails.dpdk.org/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <https://mails.dpdk.org/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
Errors-To: dev-bounces@dpdk.org
Sender: "dev" <dev-bounces@dpdk.org>

On Thu, 6 Dec 2018 11:45:22 +0800
"bai bakari" <912873551@qq.com> wrote:

> when i send packets using dpdk-pktgen, i found:
> ip_len = 46
> ip_header_len = 20
> but the tcp_header_len=(tcp_hdr->data_off << 2)=0, 
> and (payload - (uint8_t *)ipv4_hdr) = 340 > ip_len.


dpdk pktgen sends UDP not TCP.